Warp tying machine



Aug. 23, 1949. c. B. CRANDALL 2,479,604

WARP TYING MACHINE Filed Jan. 2, 1948 4 Sheets-Sheet 1 INVENTOR. Char/es B. Cranaa/l ATTORNEYS Aug. 23, 1949. c, QRANDALL 2,479,604

WARP TYING MACHINE Filed Janr 2, 194a 4 Sheets-Sheet 2 INVENTOR. Char/c5 B. Crafldal/ j w Mw ATTORNEYS.

Aug 23, 1949. c. a. CRANDALL WARP TYING MACHINE 4 Sheets-Sheet 3 Filed Jan. 2, 1948 INVENTOR. Charles B. Cmmdal/ ATTORNEYS Aug. 23, 1949. c. B. CRANDALL WARP TYING MACHINE 4 Sheets-Sheet 4 Fil ed Jan. 2, 194a INVENTOR. Char/e5 B. C/"a/mafl Z q M4.

ATTORNEYS Patented Aug. 23, 1949 WARP 'TYING MACHINE Charles B. CrandalL-Rockford; 111., assignor to- Barber-Colman Company, Rockford, 111., a core poration of Illinois Application January 2, 1948., Serial No. 109,.

11 Claims.

The invention pertains to warp tying machines of the type disclosed in Colman Patent No. 1,442,.- 776 and Noling Patent No. 2,188,394, and has particular reference to the provision in a Warp tying machine of means for facilitating the loading of the old and new warps inv the machine preparatory to tying.

Warp tying machines of the character referredto' are equipped with two pairs of warp clamps, one pair for the old warp and one pair for the new,'with the corresponding clamps of each pair disposed in vertically spaced relation so as to hold the two sheets of warp threads during the tying operation. As set forth in said Colman patent, each of the clamps includes an outwardly opening U-shaped clamping member adapted for the reception of an insertion bar to grip and hold warp threads; Such insertion bars have heretofore commonly been placed in their respective clamps by hand. This has not only entailed loss of time but some difiiculty particu-- larly in the case of machines designed to operate upon wide warpson the order of fifty-six inches in Width due to the difliculty ofhandling long insertion bars which are of necessity made thin and somewhat flexible.

With the foregoing in view, the object of the present invention, generally stated, is to provide in a warp tying machine insertion bar carriers arranged for easy manipulation in the operation of inserting thebars into their respective clamps.

A further object is to provide insertion bar carriers for use in combination with an auxiliary holder for the thread ends, which holder is mounted on the'warp tying machine for movemerit into either of two positions spaced apart' verticallyin'accordance with the spacing of the two pairs of warp clamps.

The objects of the invention thus generally set forth, together with other and ancillary adpositionwith respect to a loom of which only the pertinent portions are shown schematically.

Fig. 3 is a horizontal section taken approximately in the plane of line 3--3 of Fig. 1.

Fig.'4= is a fragmentary vertical sectional view through the machineand illustrating the loading of the new warp into the machine.

Fig." disafragmentary detail view of a lock; ing. device for the auxiliary thread holder.

Fig.'6 is a fragmentary sectional view show-i ing the, mounting ofthe clamping means of the auxiliary thread holder for endwise adjustment.

Fig? is a view similar to Fig.4 but illustrating theloading of the old warp.

My, invention. is' herein disclosed as embodied in ,a'portable machine especially adapted to be placed behind aloom requiring warp replenishmerit. Thatpart of the machine which is toward the loom will'be referred to as the loom side, andthe opposite side as the front side.

The. machine comprises a-supporting framework 10 having. a bed l'l provided with a gib l2 alongwhich the carriage of the warp uniting mechanism is arranged to travel. The carriageis not herein shown but its over-all dimensions are indicated in dotted outline at l3 in Fig. 2.

Portions of the 'twowarps to, be united are supported in the path of the warp uniting mechanism. The supports ,forthe new warps comprise a pairof. clamps. l4 and l5'and the supports for the, old warp comprise a pair of-clamps l6 and Il... Each. clamp comprises an outwardly opening ,ueshapedmemb'er l8 equipped with toothed clamping bars i811 (Fig. 1) providing cam surfaces for'rcoaction upon relative longitudinal movement of .the bars to grip an insertion bar together with the warp threads, suitable means such as levers 181) being provided for shifting one of the bars. Herein shown are four insertion bars Illa, l5a, Ilia, Ila, one for each of the clamps.

The clamps IE and. I! are mounted upon a warp carriage generally designated l9, pivotally supported on the machine frame in the manner disclosed in said Noling patent. On the loom side of the machine the two warps are additionally supported bytwo ribbonbars 20 and. 20a, one for theupper 0r old warpand the other for the lower or new warp.

On. the front sideof, the machine is mounted asupport 2| for an auxiliary holder for the thread ends, herein shown in the form of a conventional plush. clamp 22, the members of which are yielda-bly clamped together by means of spring clips 22a. The support 2 I. comprises, asshown, a pair of arms 23 connected by a tie rod. 23a andmounted ona-rockshaft24... The latter forms .a part of a vertically slidablerectangular frame 25 (Fig. 1)

having end members 26 and a lower cross rod 2611.

The frame 25 isguided for up and down movement on the machine. by means of rollers 21 coacting with upright tracks 28 fixed on the front "side of the machine. The arm 23 is adapted to be arm 43;

locked to the shaft so as to hold it closely adjacent the side of the machine as shown in broken lines in Fig. 4 through the medium of a screw clamp 29 (Fig. 5). Outward movement of the clamp support 2| is limited by extensions 30 on the lower arms 23 arranged for engagement with the tracks 28.

The frame 25 has a lower or inactive position and when in this position the clamp support 2| is held against the frame. For this purpose, the lower ends 38 of the arms 23 coact with stationary cam members 3|. The support also is adapted to be latched in either of two active positions in one of which the plush clamp 22 is positioned for supporting the ends of the old warp and in the other of which it is positioned for clamping the ends of the new warp. The

means for holding the support in either of these two active positions comprises as shown a latch 32 journaled on the shaft 24 and arranged for coaction with slots 33 and 34 in an upright'plate 35 disposed midway between the ends of the frame as shown in Fig. 1. Rigid with the latch 32 is a fingerpiece 36 carrying a spring pressed plunger 31 bearing upon a stationary cross bar 38 suitably supported by the shaft 24. The latch member 32 is thus yieldably. urged in the direction of the plate 35 so as to enter the slots 33 and 34 therein. The slots 33 and 34 are so positioned that when the latch member engages with the. lower slot the plush clamp 22 will occupy the proper position with respect to the new warp, and when it engages with the slot 34 will occupy the proper position with respect to the old warp.

The plush clamp is mounted for endwise adjustment on the upper end of the support 2|. As shown in Fig. 6, the lower member is yieldably secured to the support by means of bolts 3811 having flat heads 38b engaging on T-slots 380, the latter being formed in a plate 38d rigid with, the lower clamping member.

In accordance with my invention, I provide a pair of insertion bar carriers 39 and 49 swingably mounted on the machine frame on rockshafts 4| and 4| a at the loom and front sides thereof respectively and operative to support the respective insertion bars for movement into their respective clamps. Each of the carriers comprises, as shown, a pair of arms 42 and 43 and an intermediate arm 44 disposed substantially midway between arms 42 and 43 and made relativelythin so as to be capable of passage through the warps without injury thereto. The arms 42, 43 and 44 are fast upon the respective shafts 4| and lla and each is provided with longitudinally spaced notches 45 and 46 for the reception respectively of the insertion bars I 4a and |6a, or 5a and Ha, as the case may be. The arms 42 and 43 are further provided with ball detents 41 for yieldably retaining the insertion bars in their respective notches.

" Inasmuch as the carrier 39 is mounted on the loom side of the machine and therefore not con:

comprises a short arm 59 connected by a link 5| to a bell crank 52 which in turn is connected by a link 53 with a treadle 54 mounted on the base of the machine and projecting forwardly thereof. A spring 54a, only a portion of which is shown in dotted lines in Fig. 2, serves to return the carrier 39 when the treadle is released. The carrier 4|] being located at the front side of the machine. is provided with a handle 55 on the Additionally, this carrier has rigid therewith a notched collar 54a for coaction with a latch 54b to hold the carrier in spaced relation to the clamp l5 as shown in full lines in Fig. 4.

The operation of loading the two warps intothe loading machine will now be described, having special reference to Figs. 2, 4 and 7.

The old warp beam W having approached the point of exhaustion, the warp is clamped adjacent the beam by means of a clamp A, then severed from the beam and the clamp placedupon the loom in the position a (Fig. 2) The beam W is then replaced by the new beam W, the warp clamped close to the beam by means of a clamp B, drawn forwardly to provide a length L and then again clamped adjacent the beam by means of a clamp C. The length L is then wrapped around the clamp B and both of the clamps B and C placed upon the loom in the positions designated respectively as b and c, a sufiicient length of yarn being drawn off from the beam W to permit passage around the whip roll R of the loom.

The warp tying machine is now moved into position closely adjacent the loom, as shown in Fig. 2, and the warp carriage |9 swung into an elevated position so as to expose the lower clamps l4 and |5 for the loading of the new warp. Preparatory to this operation, the support 2| for the plush clamp 22 is moved from its lowermost or inactive position into'the position shown in Fig. 4 wherein latch member 32 engages with the slot 33. The support is locked in position close to the tying machine by means of the clamping screw 29.

The new warp is now placed across the clamps l4 and I5 and the ribbon bar 230., by unwinding the length L from the clamp B while permitting the clamp C to remain in its position 0 on the rear side of the loom whip roll. The end of the warp adjacent the clamp B is inserted in the plush clamp 22 and the clamp B allowed to hang suspended in the position D The operator now releases the support 2| from its rockshaft 24 by loosening the screw clamp 29, and swings the support forwardly so as to place the threads of the warp under uniform tension. Thereupon insertion bar |4a is laid upon the warp adjacent the loom side clamp l4 and then moved downwardly and inserted into the notches 45 of the arms 42, 43 and 44 of the car- .rier 39. It will be observed that in this act, the

warp threads are bent downwardly around the rear side of the clamp M as shown in broken lines in Fig. 4. To provide sufficient slack for such movement of the insertion bar into the carrier 39, the operator, standing in front of the machine (to the left in Fig. 4) presses his body against the upper end of the support 2| so as to swing the clamp 22 rearwardly the required distance.

The next step in the operation is to transfer the insertion bar |4a to the loomside clamp l4 and thus secure the warp threads therein. To do this, the operator depresses the treadle 54 so as to impart a swinging motion to the carrier 39 forcing the insertion bar together with the warp threads into the clamp I4. Upon release of the treadle, the carrier 39 moves reversely, the insertion bar becoming disengaged from its ball detents 41.

The operator now adjusts the plush clamp 22 lengthwise of the support 2| so as to correct the angular position of the warp threads relative to the tying mechanism.

The new warp is now ready to be secured to age-tacos tfii'fwnll0193191155 Accordingly, thesoperator places an sinsertion'fbar on' the *top "01' the warp adjacent the clamp l "andthen'-forces the inser tion bar downwardly and forwardlyr-bending warpjth'reads faround the rearedges of the bar while carrying the latterinto the'*-notches"45'of the several armsfof the carrier 401* As beforeytheoperator provides 'the n'eeessaryr slack "in' the threads. by pressing ;with" his'body on "the upper endi'of the support 2| Theunsertion bar isthen" transferredtothe clampigl5 byswinging the-roarrierAllTmanually intdthe dotted "line position shhwn Fig; 4.. It will 'ofcourseibe understood that after the. insertionbars. have b'eeninserted" intheir respective clampsgtheyare locked therein. in the. conventional Tmanner thrQugHtHe'operation ofihandleversl SUIFig; 1i. After'the clamp-j ing operation, the carrier mlmay be returned "to its .full line-position JFL 4).; determined iby the latchmemberiflbih.

The new- 'warncisanow sheared 1' between the clamp l sandtheiplush (clamp) zzipreferably' ad; iacent thetclamp I 5 ..andlthe waste "ends removed from the clampgfl.

The new warpthavingthusibeenfiloadedi into V the 1 machine, thezmextLoperationit concerns the loading ottheoldiwarp; In doing-s the operator first shifts theJrameeZS. upwardly ,(Figs 7) until the latchs32-engages withthe slot 34. in the plate strand at-thesame time swings the olamp -SuD- port 2 l rearwardly'closettot-theuframe of the "tya ingi'machine, looking it in position by, actuation of the screws-clamp 29.

The insertion: bars. I 6a "is placed in .thevupper notches Miter-the holder-i 39-and the. insertion bar I la laid onqtheslower members-of the clamp 22. Theold Warpis now unwound-from .clamplA and drawn. across beneath the clamps 6d and 11a and the-ribbon barrznl-t Asbefore,theend-ofthe warp isr-secured' in position in s the clamp i 2 2 l and thecclamp Awallowed to remain suspended from the warp; whereupon that-members of: the clamp 22:.aresecured:togethewbyr-means-iottthe1-sprin clips 1 22a. The support!!! iS;:*I'W-*' released and swung outwardlytaplaoe the old 'warpi under tensiflniandxthe clamp: '22 iadjusted longitudinally of the. supporttocorrection any improper angular relationship: oftthe warps threads 'to' the tying mechanisms 1 The:warp carriagea:l9 is: now-- lowered; and latched imposition 01').fthEitYiHgiLmQQhiHETSQ as to locate the clamps-"i lizaand l 1. in opposed relation to the lower: clam-ps1 d'andvul 5.:.Thereupon,,treadle {it is OpeIiatEditOFSWiIIg'ZiIl GIEtiOHlbali't'carlieli 39 forwardly to effect the transfer of insertion bar ifict from'athercarrieretoa clamp I6 and thereby secure the warp threads in the clamp.

Insertion bar na is'---nowremoved from the clamp 22. and insertedimtheupper notches-46 of the carrier 40, the bar havinglloeen first placed beneath the warp adjacent the clamp I! so as to press the warp 'threads upwardly' against the clamp; The carrier is nowx'swung rearwardl-y to-itransfer the insertion bar l'lw into the clamp 7 side 'thereof.'- For-this purpose, I provide azslidmg latch member 56 (Fig. 1) movablevintosen gagement with the treadle 54:" so as to hold it in its lowermost position.

It will be seenthat by the-construction and arrangement provided-the operation of loading: the ol'dfand new:warps in the tying machine is: greatly facilitated- At the same time the threads of" the 'two warps are maintained in parallel re lationshi'p and under-uniform tension-so as toinsure'proper operation of the tying mechanismw I claimas my invention:

Lina-warp tying m'achine havinga main-'- supporting frame; means mounted on said frame forsupportingtwo warps to be united comprising twcr vertically spaced loom side clamps and two vertically spaced front clamps, each of saidclamps comprising an outwardly facing U-shaped memberadapted to receive an insertion bar forclamp ing a sheet ofwarp threads, a support for' an auxiliary thread holder mounted on the front side of the frame and shiitable into 'either'of twopositions adjacent the respective"front clamps, saidsupport being swingable forwardly in either ot-saidpositions to carry said thread holder in'a' direction away from-the frame whereby to place the warp threads under tension, and a pair'of insertion bar carriers swing-ably mounted onthefront and loom sides respectively of the "frame and each comprising a plurality of arms :having notches spaced apart according to the spacing-of the-opposed clamps and adapted for the reception of insertion-bars, said carriers being swingabl'e to transfer insertion bars mounted in said notches to the respective-clamps to secure the. warp threads therein.

2. In a'warp tying machine having a main supporting frame' means mounted on said frame for supporting two warps to be united comprising two vertically spaced loom' side clamps and ltwo yer ticallyspaced frontclamps, each of said" clamps comprising an outwardly facing U -shaped; mem; ber adapted: to receivean insertion bar for clamp, ing asheet of warp threads, a support for: an auxiliary thread holder mounted on the front side of the frame and shiftable into either of two positions adjacent the respectivefront clamps; said support being swingable forwardly in either of said positions to carry said thread holder-in direction away from theirame whereby to' piace the warp threads under tension, a pair oiinsertion bar carriers swingablymounted on thefront'and loom sides respectively of the frame and each comprising a plurality of arms havingn'otches spaced apart according to the spacing of the opposed clamp-s and adapted for the-reception of insertion said carriers be ing-swingableto transfer insertion oars mounted ifr'saidhotchestothe respective clamps to secure the warp threads-therein, andtreadle-operated means -'for*swinging the loom side carrier.

3. In awarp tying machinehaving a main supporting irarne means mounted on said frame for supporting two warps to be united comprising two vertically spaced loom side clamps and two vertically spaced front clamps adapted to receive an insertion bar for clamping a sheet of warp threads, a support for an auxiliary thread holder swingably mounted on the front side of said frame and shiitable into either of two positions so as to support either of said two warps adjacent their respective clamps, and insertion bar carriers on the front and loom sides of the frame operative to receive insertion bars in either of two positions spaced apart according to the spacing of the opposed warp clamps, and each carrier being movable to carry a bar to ether with the threads of a warp bearing thereon into one or the other of the two clamps.

4. Ina warp tying machine having a main supportin frame, means mounted on said frame for supporting two warps to be united comprising two vertically spaced loom side clamps and two vertically spaced front clamps adapted to receive an insertion bar for clamping a sheet of warp threads, a swinging support for an auxiliary thread holder mounted on the front side of said frame and shiftable into either of two positions so as to support either of said two warps adjacent their respective clamps, insertion bar carriers on the front and loom sides of the frame operative to receive insertion bars in either of two positions spaced apart according to the spacing of the opposed warp clamps and movable to carry said bars together with the threads of warps bearing thereon into the respective clamps, and treadle operated means on said frame for actuating the loom side carrier.

5. In a warp tying machine having a main supporting frame and a pair of vertically spaced clamps each adapted to receive an insertion bar for clamping a sheet of warp threads, and an insertion bar carrier mounted on said frame and operative to support insertion bars in either of two positions spaced apart according to the spacing of said clamps, said carriers being movable to carry said bars together with the threads of the warps bearing thereon into the respective clamps.

6. In a warp tying machine having a main supporting frame and a pair of vertically spaced clamps each adapted to receive an insertion bar for clamping a sheet of warp threads, an insertion bar carrier mounted on said frame and operative to support insertion bars in either of two positions spaced apart according to the spacing of said clamps, said carriers being movable to carry said bars together with the threads of the warps bearing thereon into the respective clamps, and treadle-operated means for actuating said carrier.

7. In a warp tying machine having a main supportingframe, a clamp mounted on said frame and adapted to receive an insertion bar for clamping a sheet of warp threads, and an insertion bar carrier swingably mounted on the frame and operative to receive and support an insertion bar, said carrier being operative in its swinging movement to transfer an insertion bar to the clamp to clamp a sheet of warp threads therein.

8. In a warp tying machine having a main supporting frame, a clamp mounted on said frame and adapted to receive an insertion bar for clamping a sheet of warp threads, and an insertion bar carrier swingably mounted on the frame and operative to transfer an insertion bar thereon 6 to the clamp to clamp a sheet of warp threads therein, said carrier comprising a rockshaft and a plurality of arms mounted on said shaft and including two end arms and a relatively thin intermediate arm dimensioned to pass between the threads of the warp.

9. In a warp tying machine having a main supporting frame, a pair of vertically spaced front clamps each adapted to receive an insertion bar for clamping a sheet of warp threads, a support for an auxiliary thread holder swingably mounted on the front side of said frame and shiftable into either of two vertically spaced positions so as to support either of two warps adjacent their respective clamps, and an insertion bar carrier on the front of the frame constructed to support a pair of insertion bars in either of two positions according to the spacing of said clamps and movable to carry said bars together with the threads of a warp bearing thereon into one or the other of the two clamps.

10. In a warp tying machine having a main supporting frame, a pair of warp clamps mounted' on said frame in laterally spaced relation and each adapted to receive an insertion bar to clamp a warp extending across the two clamps and bent around the outer sides of the clamps, a friction clamp support mounted at one side of said frame for movement away from the frame to tension the threads yieldably gripped by the friction clamp, a pair of insertion bar carriers mounted on opposite sides of the frame and movable toward and from the respective warp clamps, each of said carriers being adapted to receive and support an insertion bar in vertically offset relation to the respective clamps whereby when a warp is interposed between the clamps and the respective insertion bars, movement of said carriers toward the clamps will carry the insertion bars together with warps into the clamps.

11. A portable warp tying machine comprising a frame mounted for movement into position adjacent a loom having a loom beam thereon, said frame having stationarily mounted thereon a pair of clamps providing laterally spaced supporting surfaces for a sheet of warp threads extending to the loom beam, an arm yieldably mounted on said frame and adapted to support a plush clamp for clamping the end of the warp and maintaining the same under tension, and an insertion bar carrier movably mounted on said frame and adapted to receive an insertion bar and to support the latter in vertically offset relation to the supporting surface of one of said clamps, said carrier being operable to carry the insertion bar into the adjacent clamp and to clamp therein warp threads bent around the clamp.

CHARLES B. CRANDALL.

REFERENCES CITED 7 The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,069,082 Colman July 29, 1913 1,442,776 Colman Jan. 16, 1923 2,188,394 Noling Jan. 30, 1940 

